Carpet-sewing machine.



Patented Nov. I8, |902. i

No. 7l3,884.

J. H. HOD.

CARPET SEWING MAQHINE.

(Application filed Feb. 25. 1902.)

3 Sheets-Sheet l.

(No Model.)

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l Himmmwkru wl" Y nwo., WASHINGTON n No. 7I3,884, Patented Nov. I8,|902.Y

J. H. HOOD.

CARPET SEWING MACHINE.

(Application led Feb. 25. 1902.)

3 Sheets-Sheet 2.

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No. 7|3,884. Patented Nov. I8, |902. `J. H. H000.

CARPET SEWING MACHINE.

(Application ledrFeb. 25. 1902.', {No Model.)

3 Sheetsv-Sheet 3.

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JOHN II. HOOD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONF- HALF TOJEREMIAH G. DONOGHUE, OF PHILADELPHIA, PENNSYLVANIA.

CARPET-SEWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 713,884, dated November18, 1902.

Application filed February 25, 1902. Serial No. 95,535. (No model.)

To all whom, it may concern.'

Be it known that I, JOHN H. HOOD, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new and useful Improvement in Carpet-Sewing Machines, ofwhich the following is a specification.

My invention consists of improvements in carpetsewing machines, and hasfor its obxo ject to provide a machine that can be employed for makingthrough and through stitches or alternate through-and-through overcaststitches and also to provide means for regulating the length of thestitch.

My invention further consists of the details of construction hereinafterfully described and claimed.

Figure 1 is the rear elevation of the carpetsewing machine embodying myinvention.

zo Fig.,2 is a side elevation thereof, taken from the right-hand side ofFig. 1, with the driving-gear shown in dotted lines. Fig. 3 is a topplan thereof. Fig. 4 is a side elevation, on an enlarged scale, of theupper portion of z5 the machine, similar tothat shown in Fig. 2, withcertain parts shown in dotted lines for convenience of illustration, theparts being in different positions from that shown in Fig. 2. Fig. 5 isa fragmentary sectional View 3o taken on the line ai w of Fig. 3. Fig. 6is a front elevation of the parts shown in Fig. 5. Fig. 7 is a sideelevation of a portion of the feed mechanism. Fig. 8 is a verticalsection taken on the line y y, Fig. 7. Figs. 9,10, 11,

and 12 show the different forms of stitches. Fig. 13 represents aperspective view of a modified construction of the feeding devices. Fig.14 represents a plan view of another modification thereof. Fig. 15represents a 4o sectional view taken on line a; a', Fig. 14.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring to the drawings, 1 designates the frame of a carpet-machine offamiliar construction provided with a handle 2, by means of which it maybe guided, and with an upright bearing 3, rigid with said frame, uponwhich the shaft 4, carrying the driving-wheel, is mounted, a suitablecrank-arm 6 being em- 5o ployed to turn said shaft. The gear 5 mesheswith pinion7 upon the bobbin-shaft 8, mounted in bearing upon the frame,said bobbinshaft carrying the gear 9, that is geared to thebalance-Wheel 10 by chain 1l. The bobbin 2 is operated byfamiliarmechanism, actua- 55 ted by a cam 13, carried by the bobbin-shaft S, andas this does not form part of my inventiona further description thereofis deemed unnecessary.

The needle-arm r14 is pivoted upon the frame 6o of the machine, beingprovided with a camslot 15, that engages a pin or projection 16 upon thedisk 17, carried by the upper end of the shaft 18, mounted in saidupright bearing 8, said shaft being provided with a bevelgear 19,meshing with bevel-gear 20, rigid with driving-gear 7. The constructionand operation of this needle-arm also does not form part of myinvention, so that a further description thereof is deemed unnecessary,7o the stitch being made in the usual way as the carpet passes throughthe guide 2l.

One partof my invention relates to forming an overcast and intel-lockedstitch alternately with th rough-and-through stitches that are formed bya machine of the character described, and to accomplish this I havedevised a mechanism which at every other stitch presses the edges of thetwo pieces of carpet beyond or to one side of the path of the needle, 8oso that the needle will not pass through the carpet at every otherstitch, and this will form an overcast stitch between thethroughand-through stitches. The advantage of this stitch is that whenit is employed it holds the 8.5 edges of the pieces of carpetsufficiently close without forming a ridge usually present whenemploying only the through -and-through stitch.

In Figs. 1 to 7 I have shown one form of 9o mechanism for moving thepieces of carpet to one side to form this overcast stitch at every otherstitch, while not interfering with the formation of thethrough-and-through stitch between these overcast stitches. 9 5 Mountedupon a bracket 21, conveniently fastened to the upright bearing 3, is alever 22, one end of which is provided with a projection 23, situated inthe path of the cam 24, carried by the driving-wheel 5, said cam ex- :o1tending about one-half around said drivingwheel, so that the lever 22 isunder the inluence thereof during one-half the revolution, a springacting upon the rear side of the lower end of this lever 22 and servingto return it to its normal position. This lever is offset, as shown inFigs. 3 and 4, and its upper end is provided with a lateral projection26, situated over the guide 21. The said guide 21 is of the usual formto introduce the two pieces of carpet in the path of the needle, andwhen the upper edges of the carpet stand entirely within the guide theneedle is passed through and through in the usual manner. Just in therear of the guide, however, is a presser member 27, pivoted within slot28 in the upper side of the guide and having a bifurcated lower portion29, the sides of which taper inwardly toward each other and which are inalinement with guide 21, so that the edges of the pieces of carpet alsopass therethrough. The upper end of the presser member 27 is providedwith a pivoted dog 30, that is adapted to be engaged with and disengagedfrom the projection 26 upon the upper end of the lever 22 convenientlyby means of a notch 3l in said dog and a pin 32 ou said lever. ln Fig. 5the dog 30 is shown as connected with lever 22, and when the parts arein this position it is understood that the through-and-throu gh stitchesand the overcast stitches are formed alternately, because the lever 22in vibrating depresses the presser member 27 at every other stitch. Themember 27 is shown depressed in Fig. 5, with the upper edge of thecarpet below the needie-path; but when the lever 22 vibrates in thcother direction the carpet will rise, so that the needle will passthrough the edges thereof.

The operation is as follows: It is understood that in operating thisclass of machines two pieces of carpet arestretched with their edgessuitably clamped, and the machine is supported thereon with the edges ofthe pieces of carpet 33 passing through the guide, as shown in Figs. 5and 6. If the dog 31 is disconnected from the lever 22, it is noted thatthe weight of the machine and the tension of they carpet will cause thepresser 27 to assume a' raised position, as shown in dotted lines inFig. 5, so that the needle 34 passes through the edge of the pieces ofcarpet at each stroke. Although the lever 22 will be vibrated. by thecam 24 of the driving-wheel, it will not communicate any motion to saidpresser 27. When, however, it is desired to form an overcast stitchalternately with the through-andthrough stitches, the dog is connectedwith the lever 22, as shown in Fig. 5, and then it will be noted thatwhen the cam 24 engages the projection of the lever 22 it will move thelower end of the lever to the rear, and conse- A quently depress thefront end of the presser Y member 27 to the position shown in Fig. 5 andhold it depressed during one-half the revolution of said gear-wheel5-th`at is to say, during one stroke of the needle. The revolution ofsaid gear-wheel 5 causes two strokes of the needle, owing to thedifference in the diameter of the bevel-gear 20 and pinion 19. Thus itwill be seen that when the presser 27 is depressed it moves the edges ofthe carpet to one side of the path of the needle which forms thisovercast interlocked stitch, as will be apparent from Fig. 5; but whenthe cam releases the lever 22 spring 25, together with the weight of themachine, will raise the presser and allow the carpet to raise t-o theupper side of the guide, thus bringing its edges in the path of theneedle to make a throughand-through stitch.

Another part of my invention consists of an improved feed mechanismwhereby the length of the stitch can be regulated. To accomplish this,the lower end of the shaft 18, mounted in the upright bearing 3, isprovided with a cam 34X, conveniently secured thereto by means of screw35 and pin 36 to insure the rigid connection. Mounted upon the frame ofthe machine is a guide-bracket 37, upon which is mounted a slide 38 bymeans of pins 39, secured to said guide-bracket 37, passing throughslots 40 in said slide. The lower end of the slide is provided with anantifrictionroller 41 to engage cam 34X, while the upper end of theslide carries the pivoted ratchet 42 to engage the ratchet-wheel 43,carried by 'sleeve 44, rotatable upon shaft S. This sleeve or hollowshaft carries the feed-wheel 45, that is situated in alinement with theguide 2l, and therefore engages the edges of the pieces of carpet, sothat as it is turned it will feed the machine by reason of itsengagement with the carpet. A pawl 46, mounted upon the frame of themachine, engages said ratchet-wheel 43 to prevent accidental rotation,and the throw of the cam 34X is sufficient to move the slide 33 adistance equal to two teeth upon the ratchetwheel 43, and thus turns thetoothed feedwheel 45 a corresponding distance, which makes a longstitch. To reduce the length of the stitch, I provide mechanism forregulating the movement of the slide 3S, which in the constructionillustrated consists of a pivoted lever 47, mounted upon theguide-bracket 37 and which is adapted to engage the notch 48 on the edgeof the slide'38 to hold it partially elevated, so that it does not reachthe lower part of the cam 34X, and thus only half the throw of the camacts upon the slide and moves the slide a distance of one tooth on theratchet-wheel 43.

It is understood, of course, that the ratchet 42 is provided with aspring 49 to hold it in engagement with the ratchet-wheel 43, and,furthermore, the spring 50 is conveniently connected with slide 38 andwith the head of one of the pins 39 and presses the ratchet inopposition to the movement imparted thereto by cam 34X.

From the foregoing description it is seen that I am enabled to make fourdifferent stitches with this machinethat is to say, by employingadjustable feed I can make a long or short through-and-through stitch,as well IIO as a long or short alternately through-andthrough andovercast stitch. Furthermore, the dog 30 can be thrown into or out ofengagement with lever 22 while the machine is in operation, as well asthe adjustment of the length of the stitch.

I have shown in Fig. 13 a modified construction for actuating thefeed-roller 45 and by means of which I obviate the employment of theslide 38 and the accompanying parts. rIhis construction consists inplacing a gearwheel 64 upon the shaft 65, carrying the feedwheel 45 andmounting a cam 66 upon the upper end of the shaft 18, the pin orprojection 16 being mounted upon the cam 66. Thus it will be seen thatas the cam is rotated the gear-wheel 64 and feed-wheel 45 are moved thedistance between two teeth on said gearwheel 64 for every revolution ofthe cam.

In Figs. 14 and 15 I have shown means for adjusting the feed byemploying a cam with interchangeable sections 67. The throw of the camportion of different sections that may be employed may vary, so that,for instance, if the cam-section that is being used will move thegear-wheel 64 the space between two teeth by substituting therefor asection where throw will move the gear-wheel 64 the space between threeteeth the feed is thereby correspondingly increased. As shown in Fig.15, the inner portion of the section 67 rests upon the head of theshaft18 and is secured thereto by a screw 68, while the sides of the sectionand the adjacent sides of the cam 66 are beveled or dovetailed in themanner shown.

Having thus described my invention, what I claim as new, and desire tosecu re by Letters Patent, is*

1. In a carpet-sewing machine, stitch-forming mechanism, comprisingsewing and feeding mechanism, a stationary guide situated on one side ofthe needle-path, and a pivotally-mounted gravitating member independentof said guide situated on the other side of the needle-path and adaptedto intermittently press the carpet edges to one side of the needle-path.

2. Ina carpet-sewing machine, stitch-forming mechanism, comprisingsewing and feeding mechanism, a stationary guide situated on one side ofthe needle-path, a pivotallymounted gravitating member independent ofsaid guide situated on the other side ofthe needle-path and adapted tointermittently press the carpet edges to one side of the needle-path,and means for disconnecting said gravitating member and the device forVibrating the same.

3. In a carpet-sewing machine, stitchforming mechanism, comprisingsewing and feeding mechanism, a stationary guide situated on one side ofthe needle-path, a pivotallymounted gravitating member independent ofsaid guide situated on the other side of the needle-path and adapted tointermittently press the carpet edges to one side of the needle-path, avibratory lever connected with said vibratcry member and the devices forvibratingl the same, and means for disconnecting said lever and member.

4. In a carpet-sewing machine,stitchforming mechanism, comprising sewingand feeding mechanism, a stationary guide situated on one side of theneedle-path, a pivotallymounted gravitating member independent of saidguide situated on the other side of the needle-path and adapted tointermittently press the carpet edges to one side of the needle-path, avibratory lever and devices for vibrating the same, and a dog connectedwith said member' and having an open slot that engages said lever.

5. In a carpet-sewing machine, stitch-forming mechanism, comprisingsewing and feeding mechanism, a stationary guide situated at one side ofthe needle-path, a pivotallymounted gravitating bifurcated pressermember situated in the rear of said guide and on the other side of theneedle-path and a connection between said member and the drivingmechanism of the machine for intermittently depressing said member.

6. In a carpet-sewing machine, stitch-forming mechanism, comprisingsewing and feeding mechanism, a stationary guide situated at one side ofthe needle-path, a pivotallymounted bifurcated gravitatingpresser memberindependent of said guide and situated on the other side of theneedle-path, a lever connected with said presser member, said leverbeing situated in the path of a movable part of the machine and adaptedto intermittently depress said member.

'7. In acarpet-sewing machine, stitch-form ing mechanism, comprisingsewing and feeding mechanism, a stationary guide on one side of theneedle-path, a pivotally-mounted gravitating presser member independentof said guide and situated on the other side of the needle-path andhaving dependent side pieces between which the edges of the carpet areadapted to enter, and means for intermittently depressing said member topress the edges of the carpet to one side of the needlepath.

S. In a carpet machine, stitch forming mechanism, comprising sewing andfeeding mechanism, a stationary guide situated on one side of theneedle-path, a pivotallymounted gravitating presser member independentof said guide and situated on the other side of the needle-path, a leverconnected with said presser member, and a cam carried by a rotatablepart of the machine, said lever being situated in the path ot' said cam.

9. In a carpet-machine, a stitch-forming mechanism comprising sewing andfeeding mechanism, a stationary guide situated at one side of theneedle-path, a pivotally-mounted gravitating presser member independentof said guide and situated at the other side of the needle-path, alever, means pivotally connected with said member for connecting and IOOdisconnecting said lever and member, and means for vibrating said leverto intermittently depress said lever and member.

lO. In a carpet-sewing machine, stitchforming mechanism, comprisingsewing and feeding mechanism, a stationary guide situated on one side ofthe needle-path, a pivotally-mounted gravitating presser memberindependent of said guide and situated on the other side of theneedle-path, a lever, a dog movably connected with said member and withmeans for engaging said lever and by means of Which it can bedisconnected therefrom, and means for vibrating said lever tointermittently depress said member.

1l. In a carpet-sewing machine, stitchforming mechanism, comprisingsewing and feeding mechanism, a shaft having a feed and a ratchet Wheel,a .fixed guide-bracket, a slide mounted upon said bracket and providedwith a pawl., engaging said `ratchetwheel, a rotatable/'cam adapted toengage said slide, and a lever pivotally mounted upon said guide-bracketand adapted to engagea shoulder on said slide to limit the movementthereof toward said cam.

l2. In a carpet sewing machine, a shaft having a feed and ratchet wheel,a slide pro-

